Assorted in 20 sizes:
(Inside Diameter x Thickness)
3.0 x 1.0 - 4.0 x 1.0 - 4.5 x 2.0 - 5.0 x 2.0 - 6.0 x 2.0
6.0 x 2.5 - 6.0 x 3.0 - 7.0 x 2.0 - 8.0 x 2,0 - 9.0 x 2.0
10 x 2.0 - 13 x 3.0 - 14 x 2.5 - 17 x 2.5 - 18 x 4.0
20 x 2.0 - 22 x 2.0 mm
In assortment box